Phosphorus Acid and Tensides

[wimpy]

If one had 1 litre of around 15 to 20% Phosphorus Acid with less than 5% Tensides within, is there a way to divide the h3po4 from the tensides so one could use it in meth production, for example?
(only hypothetical of course
I know this sounds like a Stimulant question, but it's also on Chemicals and Equipment, so i hope this forum is the right place to post ...

[Nicodem]

Very, very difficult in my opinion and not worth the effort. Can’t you get any other source of H3PO4? If you can't find it 85%, find the rust cleaners containing only diluted phosphoric acid, some with a little methanol added. See the thread:

Post 512651

(fnord: "isolating phosphoric acid", Newbee Forum).

[aia2]

I'm pretty sure he's trying to separate H₃PO₃ (phosphorous acid) not H₃PO₄ (phosphoric acid).